Unisys DMSII
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The Unisys Data Management System II ("DMSII") is a hierarchical database created by the Burroughs Corporation in 1972.
As well as having a programmatic interface to high-level languages, it has been associated with the proprietary DMInquiry and ERGO tools.
In recent releases of Unisys Clearpath software it has been renamed as the Network Database Server.